One consequence of the professionalization of philosophy is its ever increasing specialization. Within the normative domain, what has come to be known as metaethical inquiry is increasingly conducted independently of substantive ethical reflection. Even if this trend is intelligible given the economic and institutional pressures that spawned it, it is reasonable to wonder if insights are lost a...

We describe a novel framework for the design and analysis of online learning algorithms. Our framework is based on a new perspective on relative mistake bounds by viewing the number of mistakes of an online learning algorithm as a lower bound for an optimization problem. This interpretation of a mistake bound draws a connection between online learning and optimization through the theory of dual...